Hi there New to the forum but it's great! Our little pup is now 19 weeks old - she's a cross between a staff and a lurcher. She is generally very good but is guaranteed to have her crazy half hour! We have slight problem at puppy school at the minute. She is only ever friendly with black or white dogs!! Very very strange! Any of the other dogs that are not these colours she just doesn't like it at all and her scruff goes up. She is also still nipping - have tried everything now but I guess she will grow out of it (hopefully)!.